Shoveling or mucking machine.



M. T. HOSTE R. SHOVELING OR MUCKINGIMACHINE. APPLICATION FILED wL'Y25.1917.

Patented Aug. 27, 1918*.

4 SHEETS-SHEET I.

MAN/W50 THOSTE/i ATTORNEY M. T. HOSTER.

' SHOVELING 0R MUCKING MACHINE.

APPLICATION FILED JULY 25.19Il.

Patented Aug. 27, 1918.

4 SHEETS-SHE ET 3.

Mr F. %M Hm I H mm M M /y/ O/f/ZW MIT. HOSTER.

SHQVELING OR MUCKING MACHINE.

APPLICATION FILED I ULY 25 I917.

Patented Aug. 27, 1918..

4 SHEETS-SHEET 4.

WITNESSES I aw/1M.

MANFRED '1. HOSTER, OF ST. PETERS, PENNSYLVLA.

SHOVELING 0R MUCKING- MACHINE.

Specification-of Letters Patent.

Patented Aug. 2'2, 1918 Continuation of application Serial No. 878,601,filed December 22, 1914. This application filed July 25, 1917. SerialNo. 182,808.

scribed in the Letters Patent of the United States, No. 1,100,241,granted to me on June 16, 1914.

The main object of the present invention is to provide a new andimproved shoveling or mucking machine arranged to shovel up loosematerial in front of the machine and transfer it rearwardly overhead ofthe machine intoa car or receptacle stationed at the rear of themachine. Another object is to simplify the construction and operation ofthe machine relative to the one disclosed in my previous patent abovereferred to.

In order to obtain these results use is made of a main truck temporarilyfastened in position and provided with a forwardly and backwardlymovable part adapted to force a bucket into the bottom portion of.

the loose material to be shoveled, the bucket being mounted to swing ona transferring arm pivoted on the movable truck part, and means forimparting an up and down swinging motion to the bucket to scoop up theloose material and to engage the filled bucket with the transferring armand to then swing the latter rearwardly with the filled bucket until thelatter reaches a dumping posltion at a point beyond the rear end of themachine. p I

A practical embodiment of the-invention is represented in theaccompanying drawings for'ming a part of thisspecification, in whichsimilarcharacters ofreference indicate corresponding parts in all theviews.

Figural is a side elevation ofthe shoveling Jor [mucking machine withthe bucket pushed, ifritolthe bottom, of a pile, oflooSQ m er al o beh0v d;.. I, a I

meat gp an view ofitlie ame;

Fig. 3 is a side elevation of the same with the bucket in dumpingposition;

Fig. lis a front end view of the'same;

Fig. 5 is a cross section of the same on the line 55 of Fig. 1;

Fig. 6 is an enlarged sectional side eleva tlon of the valves forcontrolling the fluid pressure to the hoisting machine and the actuatingdevice for the movable member of the car truck; and

Fig. 7 is a side elevation of a modified form of the counterbalancingand returning means.

The mucking or shoveling machine is mainly intended for use in narrowand low drifts and tunnels in the heading of which holes have beendrilled by pneumatic drills for the reception of dynamite or otherexplosives which when exploded loosen the heading material and cause itto drop in a pile on the bottom of the drift or tunnel. The loosematerial is scooped up and is transferred economically to the rear ofthe machine into a car or other receptacle by the use of the machinepresently described in detail.

The truck A of the shoveling or mucking machine is adapted to run onrails B extending to or under the bottom of the pile of loose material Cto be shoveled up and transferred by a bucket D to a car E or otherreceptacle located in the rear of the shoveling or mucking machine, thecar E being likewise mounted to run on the rails B, as indi- 'cated inFigs. 1 and 3. The truck A is made in two parts A and A of which themain truck part A is fastened in place during the mucking or shovelingoperation, and the other part A is mounted to slide forward and backwardon the main part A for pushing the bucket D forward into the pile ofloose material and for assisting in the transfer of the filled bucketfrom forward to rearward dumping position, as hereinafter more .fullyexplained. The main truck part A is formed of two spaced andlongitudinally extending side beams A, preferably made of channel iron,and mounted at the rear on an axle A carrying wheels A traveling on therails B. The slidable truck part A is formed of two spaced andlengthwise extendingside beams A, preferably made of chanwith the railsB, as indicated in Figs. 1 and 3.

rarily fastened to props G nel iron, and mounted to slide on the sidebeams A, as will be readily understood by reference to Fig. 5. The frontends of the side beams A extend beyond the front ends of the side beamsA and are rigidly connected with each other at this point by a crossbeam A and the said front ends of the side beams A are adapted to engagethe bottom of the bucket-D to push the latter into the pile of loosematerial, as shown in Fig. 1. The forward portions of the side beams Aare mounted on an axle A carrying wheels A adapted to travel on therails B, and the said side beams A support a platform A. When themovable truck part A is in rearmost position on the main truck part A,as shown in Fig. 3, themachine can be readily run on the rails B to theplace of operation, and then the main truck part A is locked in place bya suitable clamping device F connecting the said truck part A .Theforward portion of the truck part A is supported on a cross bar Gremovably held in brackets G secured to the side beams A The cross bar Gextends beyond the sides of the truck A and its ends are tempo- (seeFigs. 2 and 5) resting on the ground. Each prop Gr is preferablyprovided with a vertical row of apertures G3 and a pin G is driventhrough an aperture in the corresponding end of the cross bar G andthrough an aperture Gr in register at the time with the aperture in theend of the cross bar G. By the use of the clamping device F the maintruck part A is temporarily held against movement between the loosematerial C and the car E, while the truck part A is free to slideforward and backward on the truck part A. By the use of the cross bar G,the props G and the pins Gr the truck A is held against tipping oversidewise. The wheels A traveling on the track B insure an easy forwardand backward movement of the slidable truck part A. By telescoping theside beams A and A an exceedingly strong and durable truck is provided.

The loose material C in front of the movable truck part A is scooped upby the bucket D which is provided at the sides with upwardly extendingarms D attached to a transverse shaft D journaled on a transferring armH formed of two side pieces secured to a transverse shaft H journaled insuitable bearings H held on top of a turntable I mounted on the top ofthe platform A of the movable truck part A. The turntable I is connectedby a pivot or king pin I with the platform A". By the arrangementdescribed, the bucket D, the transferring arm H and the turntable I movebodily with the movable truck part A". The side pieces of thetransferring arm H are spaced apart a distance correspondingapproximately to the width of the bucket D to allow the open end of thebucket D to enter between the outer ends of the said side pieces. Thismotion of the bucket is arrested by the sides of the bucket abuttingagainst lugs H on the inner faces of the side pieces of the transferringarm H, as will be readily understood by reference to Figs. 1 and 3.

To the sides of the bucket D are secured the ends of ropes, cables,chains or like flexible connections J extending upwardly and passingover pulleys J j ournaled on the free ends of the side beams of thetransferring arm H at the outer faces thereof to allow the bucket D toreadily pass between the side arms of the transferring arm Gr, aspreviously mentioned. The flexible connections J after passing over thepulleys J extend rearwardly and downwardly and wind on drums K of areversible hoisting machine or windless K mounted on the rear portion ofthe turntable I. The hoisting machine K may be of any approvedconstruction, pref-- erably, however, one driven by compressed air topermit of utilizing the same source of compressed air used for actuatingthe drills. The bucket D when in lowermost position has its open end'facing the pile of loose material and has its bottom abutting the frontends of the side beams A of the movable truck part A so that when thelatter is moved forward, it pushes the bucket D forward into thepile ofloose material C, as shown in Fig. 1. The front ends of the side beams Aare preferably beveled upwardly and forwardly and the bottom of thebucket D is correspondingly beveled to prevent the bucket D fromswinging upward on pushing it forward. In order to facilitate theentrance of the bucket D into the loose material the then underside ofthe bucket D has its forward edge provided with forwardly projectingteeth D- After the bucket D has entered the pile of loose material C theWindlass K is started to wind up the flexible connections J whereby thelatter impart an upward scooping motion to the bucket D for the latterto scoop up the loose material. The filled and upwardly swinging bucketD finally passes with its open mouth between the outer ends of the sidebeams of the transferring arm H and engages the stop lugs H so that onfurther winding up of the flexible connections J a rearward swingingmotion is given to the transferring arm H to carry the filled bucket Drearward overhead of the machine.

In order to counterbalance the transferring arm H and the filled bucketD after the transferring arm has passed a vertical position in itsrearward movement, use is made of a counterbalancing means, which may bein the form of weights L, as shown in Figs.

1, 2, 3 and 4, or in the form of a spring, as shown in Fig. 7. Theweights L of the counterbalancing means normally rest on the front endof the turntable I and form a support for the transferring arm H at thetime the latter is in forward position. For the purpose mentioned theside pieces of the transferring, arm H are provided with a cross bar Hadapted to rest on the uppei ends of the weights L. The weights L are ring a swinging motion to the extension arms 'L and the arms L of theweights L so that the latter are lifted off the turntable I andcounterbalance the transferring arm H and the filled bucket D during thetime the arm H swings from the vertical position into final rearmostposition for the bucket D to proximately vertical position.

dump its contents into the car E.

In the modified form shown in Fig. 7, the cross bar H of thetransferring arm H is adapted to rest on supports N and a spring N issecured at one end to the turntable I and the other end of the spring Nis attached to a forwardly extending arm N mounted to swing loosely onthe shaft H. The arm N is adjustably connected by a rod N with anupwardly extending arm N fnlcrumed loosely on the shaft H and adapted tobe engaged by the cross bar H of the transferring arm H at the time thelatter passes a vertical position in its rearward swinging movement, aspreviously explained relative to the cross bar H engaging the extensionarms L By adjusting the rod N the arms N and N can be adjusted onerelative to the other to engage the arm H* sooner or later with the armN at the time the transferring arm H moves into an ap- The spring N isgradually placed under tension during the final rearward movement of thetransferring arm H and it reaches its maximum tension at the time thetransferring arm H.

reaches its rearmost position, that is, at the time the bucket D is indumping position.

In order to prevent the loose material from falling out of the bucket Dduring the latters movement into dumping position,

use isma'de of a cover 0 extending across.

the side pieces of the transferring arm H in frontof the lower portionof the mouth of the bucket D. The cover 0 is provided with a transversepivot O journaled on the side pieces of the transferring arm H and. one

end of the ivot O is provided with an arm 0 adapted to engage aspring-pressed locking and retaining catch 0 under the control of theoperator and fulcrumed on one of the side pieces of the transferring armH. A handled cord O is attached to the catch 0 to permit the operator toconveniently disengage the catch 0 from the arm 0 at the time the bucketD reaches its dun1ping position (see Fig. 3) to allow the cover 0 toswing into an open position. Adjacent the pivoted end of the cover 0 isarranged a cross board H connecting the side pieces by the operatorreleasing the catch N and allowing the cover to swing into open positionby its own gravity and aided by the loose material pressing against thecover 0. The opening movement of the cover 0 is limited by the arm 0striking against a stop pin O on the corresponding side piece of thetransferring arm H, as will be readily v understood by reference to Fig.3.

In order to impart a forward and backward sliding movement to the truckpart A the following arrangement is made: Between the side beams A isarranged a longitudinally extending cylinder 1 closed at both ends andprovided at or near its middle with trunnions P journaled on the saidside beams A In the cylinder P is mounted to reciprocate a piston Phaving a piston rod P extending through the forward head of the cylinderP. The outer end of the piston rod P is attached to the cross beam A ofthe slidable truck part A so that when the piston P reciprocates in thecylinder P then a forward and backward sliding movement is given to thetruck part A By hanging the cylinder P on trunnions I the cylinder isfree to rock thus preventing any possible bending of the piston rod andinjury to the cylinder during the forward and backward movement of thetruck part A In order to impart a reciprocating motion to the piston Puse is made of the same source of compressed air that is used foropcrating the Windlass K and for this purpose the heads of the cylinderP are connected by flexible tubes Q and Q. with a four-way.

valve Q under the control of the operator and which air supply tube S isalso used for.

supplying the drills with compressed air as t e motive agent. The pipe Ris also canreservoir or air compressor. (not shown) nected by a branchpipe K with the windlass K to supply the latter with compressed air asthe motive agent, and the said branch pipe K is provided with a valve Kunder the control of the operator for governing the Windlass K.

In order to impart a turning motion to the turntable I the king bolt 1thereof is provided with a segmental gear wheel I in mesh with asegmental gear wheel I having its shaft. '1 journaled on the platform Aof the movable truck part A The shaft I extends upwardly through a slotI in the turntable I and the upper end of the said shaft I is madepolygonal for the application of a removable handle (not shown) underthe control of the operator standing alongside the machine to permit theoperator to swing the turntable I and the parts carried thereby to theleft or to the right (see dotted lines in Fig. 2) whenever it is desiredto scoop up the loose material at the corners of the pile.

The operation is as follows:

When the machine has been run close up to the pile of loose material andwith the slidable truck section A in rearmost position on the trucksection A then the latter is fastened in place by the clamping device F,the cross bar G, props Gr and pins G. The tube S is next coupled to thepipe R and then the operator opens the normally closed valve Q to admitcompressed air by way of the tube Q into the rear end of the cylinder Pto push the piston P forward. The piston P in its forward movementslides the truck part A forwardly whereby the bucket D, now in lowermostposition, is pushed forward into the pile of loose material C. Theoperator now closes the valve Q and opens the normally closed valve K tostart the windlass K with a view to wind up the flexible connections Jon the drums K. The flexible connections J exert a pull on the bucket Dso that the latter is caused to swing upwardly and forwardly thus scooing up the loose material C and filling t e bucket D,.which lattereventually reaches the transferring arm H and enters with its open mouthbetween the side beams of the said transferring arm H. The bucket Dcomes to a stop as soon as the sides of the bucket butt against the stoplugs H The operator may now momentarily close the valve K and reversethe valve Q to admit compressed air into the forward end of the cylinderP to start the piston P rearwardly thus moving the truck section A thetransferring arm H and the filled bucket D rearwardly. During the returnmovement of the piston P the rear end of the cylinder P is connected bythe tube Q and valve Q with the atmosphere to allow escape of the airfrom the rear end of the cylinder P.

When the truck section A has been returned to rearmost position, orduring this return movement, the operator opens the valve K to againstart the Windlass K to wind up the flexible connections J still furtheron the drums K so that a rearward swinging motion is given to thetransferring arm H owing to the bucket D being held against the stoplugs H When the transferring arm H passes a vertical position in itsrearward swinging motion the cross bar H engages the arms L (or the armN, Fig. 7) thus lifting the weight L (or placing the spring N undertension). The winding up operation of the flexible connections J iscontinued until the transferring arm H reaches the dumping positionshown in Fig. 3. The valves K and Q are closed to stop the windlass Kand the rearward movement of the truck section A. The operator nextreleases the spring catch 0 to allow the cover 0 to swing into openposition. The loose material in the bucket D now rolls or slides downover the chute H and cover 0 and drops into the car E. When the materialhas been dumped the operator opens the valve K and reverses the windlassK to allow the flexible connections J to unwind. The counterbalancingweight L (or spring N) now swings the transferring arm H forwardly anddownwardly until it comes to a rest on the weight L. Further unwindingof the flexible .connections J allows the bucket D to swing downwardinto lowermost position immediately in front of the truck section A Thevalve K is now closed. When the transferring arm H has returned tonormal forward position the cover 0 is swung back by the operator ontothe side pieces of the transferring arm H and is locked automatically inthis position by the arm 0 reengaging the spring catch 0 The valve Q isnow again turned to admit compressed air into the rear end of thecylinder P and to allow the air in the front end of the said cylinder toescape to the atmosphere by way of the tube Q and valve Q The trucksection A now again slides forward and pushes the bucket D into the pileof loose material C, and the above described operation is repeated.

It is understood that after the filled bucket D has been swung up intoposition on the outer end of the transferring arm H the operator maycause the truck section A and the transferring arm H to movesimultaneously rearward or successively by manipulatilng the valves Qand K correspondm y.

The forward and backwardmovement of the truck section A is increasedafter each shoveling operation and occasionally the turntable I is swungto the ri ht or left for the bucket D to scoop up the oose material atthe corners of the pile of loose material C. When the truck part A afterrepeated operations has finally reached the end of its forward movementon the truck part A and there isstill some loose material left in frontof the machine to be shoveled then the truck part A is unfastened andrun forward on the rails B to the extent of the full movement of thetruck part A on the truck part A and then the latter is again fastenedin place and the above described operation is repeated.

If the operator of the machine finds that the bucket D has notpenetrated into the pile the desired distance for any reason whatever,or the bucket can not be swung upward, then the operator causes themovable truck part A and thebucket D to return to starting position andthen causes the said part A to again move forward and with it the bucketD to push the latter'the desired distance into the pile of loosematerial C. In case the bucket D is but partly filled during a scoopingoperation the operator returns the part A and the bucket D instead ofbeing swung upward to position on the transferring arm H is returned tolowermost position after which the part A is again moved forward andwith it the bucket D topush the latter again into the pile of loosematerial. The bucket D is next subjected to a secondscooping operationto fill the bucket, and the filled bucket is then swung up into positionon the transferring arm H to be then moved rearward into dumpingposition.

Although the machine is primarily designed for shoveling ore and coal innarrow and low mines it is evident that it can also be successfullyemployed in the open, or in subways, tunnels and like places forscooping up loose material in front of the machine and transferring itoverhead into a car or other receptacle located in the rear of themachine.

From the foregoing it will be noticed that the Windlass K is utilizedfor imparting an upward swinging motion to the bucket D until the latterengages the transferring arm H and to then impart a rearward swingingmotion to the transferring arm with a view to carry the bucket D into anupside down or dumping position. The Windlass K is also used inconjunction with the counterbalancing means to return the transferringarm and the bucket to normal forward position. It will'also be noticedthat the Windlass K and the cylinder P and its piston operate conjointlyto cause the movable part A to slide rearwardly and to carry thetransferring arm H and the bucket D held there on bodily in a rearwarddirection so that the bucket D, when it reaches the dumping position, islocated at a point beyond the rear end of the truck A to allow thecontents of the bucket D to drop into the car E.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A shoveling machine of the character described,comprising a truck having two main parts each provided with wheelsadapted to travel ontrack rails, one of the truck parts being heldtemporarily fixed during the shoveling operation and the other parthaving its frame mounted to slide forward and backward on the frame ofthe fixed truck part, actuating means for imparting a forward andbackward movement to the said movable part, a bucket adapted to beengaged by the forward end of the said movable truck part to push thebucket forward in a straight line, into the material to be shoveled,means for subsequently imparting a forward and upward swinging motion tothe said bucket for the latter to scoop up the material, and carryingmeans adapted to carry the said bucket from a filled and raised positionrearwardly overhead of the machine into an upside down dumping position.

2. A shoveling machine of the character described, comprising a truckhaving two main parts each provided with wheels adapted to travel ontrack rails, one of the truck parts being held temporarily fixed duringthe shoveling operation and the other part having its frame slidableforward and backward on the frame of the fixed truck part, actuatingmeans for imparting a forward and backward movement to the said movablepart, a bucket adapted to be engaged by the forward end of the saidmovable truck part to push the bucket forward in a straight line intothe material to be shoveled, means for subsequently imparting a forwardand upward swinging motion to the said bucket for the latter to scoop upthe material, carrying means mounted on the said movable part andadapted to carry the said bucket from a filled and raised positionrearwardly overhead of the machine into an upside down dumping position,the said movable part and the said carrying means operating conjointlyto position the bucket at 'a point beyond the rear of the machine at thetime the bucket reaches a dumping position.

3. A shoveling machine of the character described provided with a truckhaving two parts each provided with wheels adapted to travel on trackrails, one of the truck parts being held fixed during the shovelingoperation and the other truck part having its frame slidable forward andbackward on the frame of the fixed truck part, actuating means formoving the said movable part forward and backward, and a bucket in frontof the said movable part adapted to be pushed forward by the same intothe material to be shoveled.

4:. A shoveling machine of the character described provided with a truckhaving two y direction and the bottom of the bucket beingcorrespondingly beveled to hold the bucket against upward movement whilebeing pushed into the material.

5. In a shoveling machine of the character described, a truck having twoparts each provided with wheels and of which one part is held fixedduring the shoveling operation and the other part has its frame mountedto slide forward and backward on the frame of the fixed truck part,actuating means for moving the said movable part forward and backward, atransferring arm mounted to swing and to travel bodily with the saidmovable truck part, a bucket mounted to swing on the said transferringarm and adapted to be engaged by the front end of the said movable truckpart to push the bucket straight ahead into the material to be shoveled,and means for imparting a swinging motion to the bucket to engage thelatter with the said transferring arm and to subsequently impart arearward swinging motion to the said transferring arm to carry thefilled bucket overhead of the machine into a dumping position at a pointbeyond the rear of the machine. I I

6. In a shoveling machine of the character described, a truck having twoparts each provided with wheels and of which one part is held stationaryduring the shoveling operation and'the other truck part has its framemounted to slide forward and backward on the frame of the fixed truckpart, actuating means mounted on the said fixed truck part and connectedwith the said movable truck part to move the latter forward and backward, a bucket adapted to be pushed by the said movable truck partstraight ahead into the material to be shoveled, transferring meansmounted on the said movable truck part and moving bodily with'the same,the said bucket being mounted to swing on the transferring means, andactuating means mounted on the said fixed truck part and connected withthe said bucket and the said transferring means to swing the bucket intoengagement with the transferring means and to su sequently move thetransferring means and the bucket rearwardly overhead of the machineuntil the bucket reaches a dumping position at a point beyond the'rearof the machine.

7. A shoveling machine of the character described, comprising a truckhaving two parts, of which one is held fixed during the shovelingoperation and the other part is mounted to slide forward and backward onthe said fixed part, a bucket, a transferring arm mounted to swing onthe said movable wart, means for imparting an upward swingmg motion tothe said bucket to engage the bucket with the said transferring arm andto then impart a rearward swinging motion to the said transferring armoverhead of the machine, to carry the said bucket into dumping positionat a point beyond the rear of the machine.

8. A shoveling machine of the character described provided with abucket, a transferring means on which the bucket is mounted to swing,and an actuating means connected with the said bucket and the said t1ansferring means for imparting an upward swinging motion to the saidbucket to engage the latter with the said transferring means and tosubsequently impart a rearward motion to the said transferring means tocarry the said bucket overhead the machine into dumping position at apoint beyond the rear of the machine.

9. A shoveling machine of the character described, comprising atransferring arm mounted to swing from a forward position rearwardlybeyond a vertical position, a bucket mounted to swing on the saidtransferring arm and adapted to engage the same, a pulley journaled onthe said transferring arm, and a windlass having a flexible connectionextending over the said pulley and fastened to the said bucket to swingthe latter upward into engagement with the transferring arm and to thenimpart a swinging motion to the said transferring arm.

10. A shoveling machine of the characterdescribed, comprising atransferring arm mounted to swing from a forward position rearwardlybeyond a vertical position, a bucket mounted to swing on the saidtransferring arm and adapted to engage a pulley journaled in the saidtransferring arm, a windlass having a flexible connection extending overthe said pulley and fastened to the said bucket to swing the latterupward in engagement with the transferring arm and to then impart aswinging motion I to the said transferring arm, and a counterbalancingdevice adapted to be engaged by the said transferring arm at the timethe latter reaches an approximately sition to counterbalance thetransferring vertical poarm and the bucket during the final rearwardswinging motion and to impart a forward swinging motion to the saidtransferring arm, a 1:

11. In a shoveling machine of the character described, a transferringarm mounted to swing from a forward position rearwardly beyond avertical position, a bucket engaging with its open mouth the saidtransferring arm, and a cover mounted to swing on the said transferringarm and adapted to close the mouth of the bucket during the rearwardmovement of the said transferring arm and bucket, and adapted to swinginto open position to form a chute for guiding the material dumped bythe bucket into a receptacle at the rear end of the machine.

12. In a shoveling machine of the character described, a transferringarm mounted to swing from a forward Position rearwardly beyond avertical position, a bucket engaging with its open mouth the saidtransferring arm, a cover mounted to swing on the said transferring armand adapted to close the mouth of the bucket during the rearwardmovement of the said transferring arm and bucket and adapted to swinginto open position to form a chute for guiding the material dumped bythe bucket into a receptacle at the rear end of the machine, and amanually controlled locking and releasing device mounted on the saidtransferring arm and adapted to lock to release the said cover.

13. A shoveling machine of the character described provided with apivoted transferring arm having side pieces, a bucket mounted on thesaid transferring arm and adapted to pass with its open month betweenthe said side pieces, a cover pivoted on the said side pieces andadapted to form a closure for the said bucket, an arm on the pivot ofthe said cover, a locking and releasing device for the said arm to holdthe cover in locked position and to allow of releasing the cover, andmeans adapted to be engaged by the said arm to limit the openingmovement of the cover for the latter to form a chute for material dumpedby the said bucket.

14. A shoveling machine of the character described provided with apivoted transferring arm having side pieces, a bucket mounted on thesaid transferring arm and adapted to pass with its open mouth betweenthe said side pieces, a cover pivoted on the said side pieces andadapted to form a closure for the said bucket, an arm on the pivot ofthe said cover, a locking and releasing device for the said arm to holdthe cover in locked position and to allow of releasing the cover, meansadapted to be en gaged by the said arm to limit the opening movement ofthe cover for the latter to form a chute for material dumped by the saidbucket, and a chute connecting the said side pieces with each otheradjacent the pivoted end of the said cover to form a connecting chutebetween the mouth of the bucket and the said cover at the time the coveris in: open position.

15. A shoveling machine of the character described provided with a trackhaving a main part and a slidable part, the said truck parts having sidebeams slidable lengthwise one on the other, wheels for each truck partand adapted to travel on track rails, a cylinder pivoted on the saidmain truck part and having a piston connected with the said slidabletruck part, and means connected with the said cylinder for admittingfluid pressure alternately into the ends of the said cylinder to movethe said piston and the said slidable truck part forward and backward. 7

16. A shoveling machine of the character described provided with a truckhaving a main part and a slidable part, the said truck parts having sidebeams slidable lengthwise one on the other, wheels for each truck partand adapted to travel on track rails, a cylinder pivoted on-the saidmain truck part and having a piston connected with the said slidabletruck part, means connected with the said cylinder for admitting fluidpressure alternately into the ends of the said cylinder to move the saidpiston and the said slidable truck part forward and backward, a pivotedtransferring arm carried by the said slidable truck part, a bucketmounted to swing on the said transferring arm, a pulley on the saidtransferring arm, and a Windlass carried by the slid-able truck part andhaving a cable connected with the said bucket and extending over thesaid pulley.

17. A shoveling machine of the character described, comprising a truckhaving two parts each provided with wheels adapted to travel on trackrails, one of the truck parts being held temporarily stationary duringthe shoveling operation and the other truck part having its frameslidable forward and backward on the frame of the fixed truck part,actuating means for imparting a forward and bagkward movement to thesaid movable part, and a bucket adapted to move forward and backwardwith the said movable truck part.

18. A shoveling machine of the character described, comprising a truckhaving two parts each provided with wheels adapted to travel on trackrails, one of the truck parts being held temporarily stationary duringthe shoveling operation and the other truck part having its frameslidable forward and backward on the frame of the fixed truck part,actuating means for imparting a forward and backward movement to thesaid movable part, a bucket adapted to move forward and backward withthe said movable truck part, and means for imparting a scooping motionto the said bucket after the latter has been pushed into a pile of loosematerial.

19. A shoveling machine of the character described, comprising a truckhaving two parts each provided with wheels adapted to travel on trackrails, one of the truck parts being held temporarily stationary duringthe shoveling operation and the other truck part having its frameslidable forward and backward on the frame of the other truck part,actuating means for imparting a forward and backward movement to thesaid movable part, a bucket adapted to move forward and backward withthesaid movable truck part, and means for imparting an upward scoopingmotion and a subsequent downward return motion to the said bucket toreturn the latter to starting position.

In testimony whereof I affix my signature.

MANFRED T. HOSTER.

